View previous topic :: View next topic |
Author |
Message |
Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
|
Posted: Nov 24, 2017 10:20 Post subject: Re: Collection of Michael Shaw |
|
|
Covellite
Mineral: | Covellite |
Locality: | Summitville Mine, Summitville District, Rio Grande County, Colorado, USA | |
|
Dimensions: | 4.1 x 5.8 cm |
Description: |
Layered plates of golden-brassy metallic covellite with subtle iridescent blue highlights. |
|
Viewed: |
20097 Time(s) |
|
|
|
Back to top |
|
|
Benj
Joined: 03 Mar 2013
Posts: 87
Location: Nantes City, FRANCE.
|
Posted: Nov 24, 2017 10:36 Post subject: Re: Collection of Michael Shaw |
|
|
very nice !
|
|
Back to top |
|
|
Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
|
Posted: Nov 24, 2017 14:23 Post subject: Re: Collection of Michael Shaw |
|
|
Thank you Benj. The color of these covellites from the Summitville Miine is quite different from the covellite specimens from other locations.
|
|
Back to top |
|
|
Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
|
Posted: Nov 27, 2017 18:34 Post subject: Re: Collection of Michael Shaw |
|
|
Mineral: | Calcite |
Locality: | Krushev dol Mine, Madan mining area, Rhodope Mountains, Smolyan Oblast, Bulgaria | |
|
Dimensions: | 1.4 x 1.6 x 5.4 cm. |
Description: |
A twisted helectite composed of stacked colorless calcite rhombs to 0.6 cm. Mined in January 2016 from Level 550, Block 1-South. |
|
Viewed: |
19912 Time(s) |
|
|
|
Back to top |
|
|
Niels Brouwer
Joined: 26 Sep 2016
Posts: 54
|
Posted: Nov 27, 2017 20:11 Post subject: Re: Collection of Michael Shaw |
|
|
Hello Michael, I think it has been at least the fourth time now that I've browsed through all 60 pages of your collection, and it is still an absolute pleasure to see the diversity and quality of your collection. Thanks a lot for sharing it with us!
|
|
Back to top |
|
|
Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
|
Posted: Nov 28, 2017 08:46 Post subject: Re: Collection of Michael Shaw |
|
|
Niels Brouwer wrote: | Hello Michael, I think it has been at least the fourth time now that I've browsed through all 60 pages of your collection, and it is still an absolute pleasure to see the diversity and quality of your collection. Thanks a lot for sharing it with us! |
Thank you Neils. Likewise, I am enjoying your wonderful collection of baryte. It is a pleasure to be able to share our passion for minerals with other collectors on this site.
|
|
Back to top |
|
|
Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
|
Posted: Nov 29, 2017 12:46 Post subject: Re: Collection of Michael Shaw |
|
|
Mineral: | Pyrite ps. after pyrrhotite |
Locality: | Herja Mine, Chiuzbaia, Baia Sprie, Maramures, Romania | |
|
Dimensions: | 4.9 x 7.0 x 9.1 cm. |
Description: |
Brassy yellow pyrite forming pseudomorphs after pyrrhotite crystals, interspersed among milky quartz crystals on a matrix of quartz, galena and pyrite. |
|
Viewed: |
19685 Time(s) |
|
Mineral: | Pyrite ps. after pyrrhotite |
Locality: | Herja Mine, Chiuzbaia, Baia Sprie, Maramures, Romania | |
|
Dimensions: | 4.9 x 7.0 x 9.1 cm. |
Description: |
|
Viewed: |
19668 Time(s) |
|
|
|
Back to top |
|
|
Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
|
Posted: Dec 01, 2017 13:08 Post subject: Re: Collection of Michael Shaw |
|
|
Mineral: | Arsenopyrite |
Locality: | Stan Trg (Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District, Kosovo | |
|
Dimensions: | 3.2 x 5.9 x 7.1 cm |
Description: |
Sharp silver-metallic arsenopyrite crystals to 2.5 cm exhibiting stepped growth on massive arsenopyrite. |
|
Viewed: |
19535 Time(s) |
|
|
|
Back to top |
|
|
Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
|
Posted: Dec 04, 2017 13:03 Post subject: Re: Collection of Michael Shaw |
|
|
Oklahoma quartz
Mineral: | Quartz |
Locality: | Broken Bow, McCurtain County, Oklahoma, USA | |
|
Dimensions: | 2.9 x 4.3 cm |
Description: |
Collected in 2001 just north of Broken Bow. |
|
Viewed: |
19433 Time(s) |
|
|
|
Back to top |
|
|
Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
|
Posted: Dec 05, 2017 02:42 Post subject: Re: Collection of Michael Shaw |
|
|
Hi Michael, what is the white near the termination point of the Oklahoma quartz? Is it inclusions or on the surface?
_________________ Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
|
Back to top |
|
|
Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
|
Posted: Dec 05, 2017 21:12 Post subject: Re: Collection of Michael Shaw |
|
|
Pierre Joubert wrote: | Hi Michael, what is the white near the termination point of the Oklahoma quartz? Is it inclusions or on the surface? |
Hi Pierre,
Actually the white is a reflection of the rhombohedral faces on the back side of the crystal. I should try for a better photo in the future.
Michael
|
|
Back to top |
|
|
Pierre Joubert
Joined: 09 Mar 2012
Posts: 1605
Location: Western Cape
|
Posted: Dec 06, 2017 02:35 Post subject: Re: Collection of Michael Shaw |
|
|
crosstimber wrote: | Pierre Joubert wrote: | Hi Michael, what is the white near the termination point of the Oklahoma quartz? Is it inclusions or on the surface? |
Hi Pierre,
Actually the white is a reflection of the rhombohedral faces on the back side of the crystal. I should try for a better photo in the future.
Michael |
Hi Michael, nothing wrong with the picture. I am talking about the white spots near the point.
_________________ Pierre Joubert
'The tree of silence bears the fruit of peace. ' |
|
Back to top |
|
|
Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
|
Posted: Dec 06, 2017 11:13 Post subject: Re: Collection of Michael Shaw |
|
|
Pierre Joubert wrote: | crosstimber wrote: | Pierre Joubert wrote: | Hi Michael, what is the white near the termination point of the Oklahoma quartz? Is it inclusions or on the surface? |
Hi Pierre,
Actually the white is a reflection of the rhombohedral faces on the back side of the crystal. I should try for a better photo in the future.
Michael |
Hi Michael, nothing wrong with the picture. I am talking about the white spots near the point. |
Hi Pierre,
Oh, those spots! I really hadn't noticed them until you mentioned them. They are not visible when looking at the actual specimen in the hand unless the light is just right. So I looked at the piece closely this morning, and even examined it under a microscope. The spots are definitely on the surface. Probably left over residue from the oxalic acid bath.
Michael
|
|
Back to top |
|
|
Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
|
Posted: Dec 07, 2017 14:14 Post subject: Re: Collection of Michael Shaw |
|
|
Mineral: | Libethenite |
Locality: | Nchanga Mine, Chingola, Chingola District, Copperbelt Province, Zambia | |
|
Dimensions: | 4.3 x 5.5 cm |
Description: |
Sharp prismatic crystals of lustrous dark green libethenite to 3.0 mm lying on botryoidal blue-green pseudomalachite. |
|
Viewed: |
19159 Time(s) |
|
|
|
Back to top |
|
|
Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
|
Posted: Dec 09, 2017 09:47 Post subject: Re: Collection of Michael Shaw |
|
|
Mineral: | Calcite |
Locality: | Leiping Mine, Leiping, Guiyang, Chenzhou Prefecture, Hunan Province, China | |
|
Dimensions: | 4.6 x 8.5 cm |
Description: |
Two generations of calcite. The first composed of honey-colored scalenohedrons overgrown with lustrous flattened calcite rhombs to 3.0 cm across, the rims of which are tinted gray presumably from included sulfides. |
|
Viewed: |
19016 Time(s) |
|
Mineral: | Calcite |
Locality: | Leiping Mine, Leiping, Guiyang, Chenzhou Prefecture, Hunan Province, China | |
|
Dimensions: | 4.6 x 8.5 cm |
Description: |
|
Viewed: |
19016 Time(s) |
|
Mineral: | Calcite |
Locality: | Leiping Mine, Leiping, Guiyang, Chenzhou Prefecture, Hunan Province, China | |
|
Dimensions: | 4.6 x 8.5 cm |
Description: |
|
Viewed: |
19032 Time(s) |
|
|
|
Back to top |
|
|
Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
|
Posted: Dec 11, 2017 15:24 Post subject: Re: Collection of Michael Shaw |
|
|
Ojuela Mine
Mineral: | Adamite |
Locality: | Ojuela Mine, Mapimí, Municipio Mapimí, Durango, Mexico | |
|
Dimensions: | 7.1 x 13.2 cm |
Description: |
|
Viewed: |
18939 Time(s) |
|
Mineral: | Mimetite |
Locality: | Ojuela Mine, Mapimí, Municipio Mapimí, Durango, Mexico | |
|
Dimensions: | 1.7 x 2.4 cm |
Description: |
|
Viewed: |
18954 Time(s) |
|
|
|
Back to top |
|
|
Don Lum
Joined: 03 Sep 2012
Posts: 2856
Location: Arkansas
|
Posted: Dec 11, 2017 16:12 Post subject: Re: Collection of Michael Shaw |
|
|
crosstimber wrote: | Ojuela Mine |
Michael,
How did you get the sugar to coat this Mimetite so uniformly? ;-)
Don
_________________ hogwild |
|
Back to top |
|
|
Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
|
Posted: Dec 11, 2017 17:53 Post subject: Re: Collection of Michael Shaw |
|
|
Don Lum wrote: | crosstimber wrote: | Ojuela Mine |
Michael,
How did you get the sugar to coat this Mimetite so uniformly? ;-)
Don |
Now Don, you know that I can't divulge this secret enhancement technique. Good to hear from you. Hope you and Gwen are well.
Michael
|
|
Back to top |
|
|
Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2067
Location: Oklahoma
|
Posted: Dec 12, 2017 14:16 Post subject: Re: Collection of Michael Shaw |
|
|
...
Mineral: | Gypsum |
Locality: | Irish Canyon, Moffat County, Colorado, USA | |
|
Dimensions: | 1.5 x 3.5 x 6.2 cm |
Description: |
A single mostly transparent gypsum crystal with mosaic-textured faces. |
|
Viewed: |
18698 Time(s) |
|
|
|
Back to top |
|
|
Nunzio
Joined: 28 Oct 2016
Posts: 58
Location: Massachusetts
|
Posted: Dec 12, 2017 22:57 Post subject: Re: Collection of Michael Shaw |
|
|
Beautiful Mimetite, Michael!
|
|
Back to top |
|
|
|